From 061de8a68739eb62470fa59eb1448c69500866e5 Mon Sep 17 00:00:00 2001
From: Eric Douglas <eric.eoop@gmail.com>
Date: Sat, 24 May 2014 05:34:14 -0300
Subject: [PATCH] add the map pattern - 1.1.3

---
 .../UNIT-01/03-problem-solving/.loops.py.swp  | Bin 12288 -> 12288 bytes
 .../UNIT-01/03-problem-solving/loops.py       |  30 ++++++++++++++++++
 2 files changed, 30 insertions(+)

diff --git a/archives/01-introduction-to-computer-science-and-programming/archives/UNIT-01/03-problem-solving/.loops.py.swp b/archives/01-introduction-to-computer-science-and-programming/archives/UNIT-01/03-problem-solving/.loops.py.swp
index 33ad8d0c0cb2f4f5274863b0645080ed839bdd4d..d08176986a7487d26ef2a773c73efc7031044f9d 100644
GIT binary patch
delta 425
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delta 188
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diff --git a/archives/01-introduction-to-computer-science-and-programming/archives/UNIT-01/03-problem-solving/loops.py b/archives/01-introduction-to-computer-science-and-programming/archives/UNIT-01/03-problem-solving/loops.py
index 5176536..9988023 100644
--- a/archives/01-introduction-to-computer-science-and-programming/archives/UNIT-01/03-problem-solving/loops.py
+++ b/archives/01-introduction-to-computer-science-and-programming/archives/UNIT-01/03-problem-solving/loops.py
@@ -66,3 +66,33 @@ def extractEvens(items):
 
 ## Add isEven function 
 def isEven(value):
+  if value % 2 == 0:
+    return True
+  return False
+
+someValues = [1,2,4,3,5,7,8,6,9]
+
+print extractEvens(someValues)
+
+## Using append method because array concatenation is very slowly for large arrays
+def extractEvens(items):
+  evens = []
+  for i in range(0, len(items), 1):
+    if isEven(items[i]):
+      evens.append(items[i]) # method invocation
+  return evens
+
+# The map pattern
+def map(f, items):
+  result = []
+  for i in range(0, len(items), 1):
+    transformed = f(items[i])
+    result.append(transformed)
+  return result
+
+## Using this pattern
+def increment(value):
+  return value + 1
+
+someValues = [1, 2, 3, 4, 5, 6, 7]
+print map(increment, someValues)